Rating: 4.4/5
Zuisouroku is a collection of Hakuouki short stories that take place at the same of the main story. Besides the main 6, there are also stories for Shinpachi, Yamazaki,Sannan, and Kondou. Unlockable features include SSL (Sweet School Life), aka Hakuoki Highschool.{thanks to Hakuouki Wikia}
You also need an emulator to run this game. To grab one quickly, please check out our NDS emulators section.